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SSC Sample Paper SSC-CGL TIER - I Sample Test Paper-2

  • question_answer
    Which one of the following elements is an example of noble gas?

    A)  Nitrogen           

    B)  Hydrogen

    C)  Chlorine           

    D)  Helium

    Correct Answer: D

    Solution :

     Helium is a noble gas. Noble gas is also called as inert gas. Their orbits are complete and they do not have any free electrons. Neon, Argon, Krypton Xenon are other noble gases.


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